Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for id:"oai:dk.um.si:IzpisGradiva.php?id=70920". One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Vodopivec, Katja. Razvoj in validacija modificirane Bi-Sn elektrode.

Degree: 2018, Univerza v Mariboru

Magistrsko delo prikazuje študijo delne validacije elektroanalizne metode z in situ modificirano bizmut-kositrovo elektrodo iz steklastega ogljika za analizo težkih kovin Zn(II), Cd(II) in Pb(II) v sledovih. Analizo smo izvajali s tehniko square-wave anodne striping voltametrije (SWASV), reverzibilnost sistema pa smo preverili s pomočjo ciklične voltametrije (CV) za analizo kalijevega heksacianoferata. Pri validaciji smo izvedli določitev meje zaznavnosti (LOD) in meje določljivosti (LOQ) za 12 modificiranih Bi-Sn-elektrod iz steklastega ogljika z različnimi koncentracijskimi sestavami Bi(III) in Sn(II). Kasneje smo določili območja linearnosti za Zn(II), Cd(II) in Pb(II) z uporabo vsake izmed dvanajstih elektrod posebej. Preverili smo točnost in ponovljivost elektrod s pomočjo t-testa in izračuna RSD. Ugotovljeno je bilo, da je najbolj optimalna elektroda tista, za katero smo pri njeni in situ pripravi uporabili 0,5 mg L–1 Bi(III) in Sn(II) v razmerju 0,4 : 0,6. S pomočjo te elektrode smo preučili vpliv interferenc na izbrane analite – Zn(II), Cd(II) in Pb(II) ter izmerili dva realna vzorca.

This master's thesis presents a partial validation study of an electroanalytic method of in situ plated bismuth-tin-film modified glassy carbon electrode for the trace analysis of Zn(II), Cd(II) and Pb(II) heavy metals. The analysis was carried out using square-wave anodic stripping voltammetry (SWASV) technique and the reversibility of the system was checked by cyclic voltammetry (CV) using potassium hexacyanoferrate system. The validation began with determination of the detection limit (LOD) and the quantification limit (LOQ) for 12 modified Bi(III)-Sn(II)-film glassy carbon electrodes with different concentration ratios of Bi(III) and Sn(II), followed by method's linearity determination. We validated the accuracy and reproducibility of electrodes using t-test and RSD values. The results have shown that the most optimal electrode is the one for which 0.5 mg L-1 Bi (III) and Sn (II) with the 0.4:0.6 ratio was used in its in situ plating solution. Using this electrode we studied the influence of interferences on selected analytes - Zn (II), Cd (II), and Pb (II), and used the method for two real samples.

Advisors/Committee Members: Finšgar, Matjaž.

Subjects/Keywords: elektrokemija; voltametrija; elektroda iz steklastega ogljika; Bi-Sn modificirana elektroda iz steklastega ogljika; validacija analizne metode; electrochemistry; voltammetry; glassy carbon electrode; Bi-Sn modified glassy carbon electrode; validation of the analytical method

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Vodopivec, K. (2018). Razvoj in validacija modificirane Bi-Sn elektrode. (Masters Thesis). Univerza v Mariboru. Retrieved from https://dk.um.si/IzpisGradiva.php?id=70920 ; https://dk.um.si/Dokument.php?id=128904&dn=

Chicago Manual of Style (16th Edition):

Vodopivec, Katja. “Razvoj in validacija modificirane Bi-Sn elektrode.” 2018. Masters Thesis, Univerza v Mariboru. Accessed September 24, 2018. https://dk.um.si/IzpisGradiva.php?id=70920 ; https://dk.um.si/Dokument.php?id=128904&dn=.

MLA Handbook (7th Edition):

Vodopivec, Katja. “Razvoj in validacija modificirane Bi-Sn elektrode.” 2018. Web. 24 Sep 2018.

Vancouver:

Vodopivec K. Razvoj in validacija modificirane Bi-Sn elektrode. [Internet] [Masters thesis]. Univerza v Mariboru; 2018. [cited 2018 Sep 24]. Available from: https://dk.um.si/IzpisGradiva.php?id=70920 ; https://dk.um.si/Dokument.php?id=128904&dn=.

Council of Science Editors:

Vodopivec K. Razvoj in validacija modificirane Bi-Sn elektrode. [Masters Thesis]. Univerza v Mariboru; 2018. Available from: https://dk.um.si/IzpisGradiva.php?id=70920 ; https://dk.um.si/Dokument.php?id=128904&dn=

.